need some help deciding on how to continue build. ive been running arn's for the past day but ive got a stygian that sims higher, im too dumb to understand the benefit of arn's vs a stygian. is it just the chance to proc the triple damage? the stygian also helps me keep righteous fire on longer.

any advice on what to craft/go for next is welcome. also i know im missing two gems, i actually dont know what/how to fit anything else in

i added two gear sets one with the arn's and one with the stygian vise set up https://pobb.in/8mo2pMrEDP9y